The texture evolution of Cu-1.6Ni-1.2Co-0.65Si alloy sheet during the production process was studied by EBSD. The results show that the texture composition of the solid solution sample of the alloy is mainly the Brass texture of the α fiber texture, the Goss texture, the S texture and a small amount of Copper texture; the direct aging treatment after solution does not change the sample The type of texture, but it will significantly reduce the strength of the Brass texture and slightly increase the strength of the Copper texture. As the cold-rolled deformed sample increases, the Brass texture will gradually replace other original textures. The texture pole density increases, and the increase in hardness of the alloy by work hardening is positively correlated with the increase in texture pole density. The texture type remains unchanged at the initial stage of aging at 500°C, and the overall texture pole density increases slightly as the aging time increases. Extending, the extreme density of the overall texture gradually decreases, and the texture types tend to be dispersed. During the aging process, the texture density first increases and then decreases, the same as the hardness change rule；With the increase of the aging temperature, the cold-rolled samples recrystallized and the grains grew, the Brass texture tended to disperse, the strength gradually weakened, the recrystallized texture formed and gradually concentrated, and the extreme density strength gradually increased.